Electrical Engineering

Air Core Inductor Inductance Calculator

Air-core inductors are often used in high-frequency circuits. If you know the parameters, you can wind them yourself. This page provides a calculation tool for air core inductor winding data, which is

Battery Life Calculator

We call a complete charge and discharge of the battery (charge to the battery's rated maximum charging voltage, discharge to the battery's rated minimum discharge voltage) a cycle, represented by Q. W

Butterworth Pi LC High Pass Filter Calculator

The Butterworth type filter was first described by the British engineer Stephen Butterworth. A PI filter is a filter that has a series element and two parallel elements connected in the shape of the G

Butterworth Pi LC Low Pass Filter Calculator

The Butterworth type filter was first described by the British engineer Stephen Butterworth. A PI filter is a filter that has a series element and two parallel elements connected in the shape of the G

Butterworth Tee LC High Pass Filter Calculator

The Butterworth type filter was first described by the British engineer Stephen Butterworth. A Tee filter is a filter that has a two series elements and a parallel element connected in the shape of le

Butterworth Tee LC Low Pass Filter Calculator

The Butterworth type filter was first described by the British engineer Stephen Butterworth. A Tee filter is a filter that has a two series elements and a parallel element connected in the shape of le

Capacitance Frequency Inductance Calculator

Frequency inductance and capacitance calculation tool is a free capacitance and inductance frequency calculation tool. It is small and easy to use, with a simple interface. You only need to enter any

Capacitor Energy and Time Constant Calculator

The capacitance time constant represents the physical quantity of the speed of response change during the transient process of the circuit. Has a time dimension. The smaller the time constant of the c

Chebyshev Pi LC High Pass Filter Calculator

The Chebyshev type filter is named in honor of Pafnuty Chebyshev because their mathematical characteristics are derived from Chebyshev polynomials. A PI filter is a filter that has a series element an

Chebyshev Pi LC Low Pass Filter Calculator

The Chebyshev type filter is named in honor of Pafnuty Chebyshev because their mathematical characteristics are derived from Chebyshev polynomials. A PI filter is a filter that has a series element an

Chebyshev Tee LC High Pass Filter Calculator

The Chebyshev type filter is named in honor of Pafnuty Chebyshev because their mathematical characteristics are derived from Chebyshev polynomials. A Tee filter is a filter that has a two series eleme

Chebyshev Tee LC Low Pass Filter Calculator

The Chebyshev type filter is named in honor of Pafnuty Chebyshev because their mathematical characteristics are derived from Chebyshev polynomials. A Tee filter is a filter that has a two series eleme

Coilwinding Calculators

Calculate the number of turns: The number of turns is a basic parameter in winding, usually expressed as N. The calculation formula is: N = (U × 10^3) / (4.44 × B × f × A × K) Among them, U is the rat

Equal Component Butterworth High Pass Filter Calculator

Enter the cutoff frequency value, any resistor or capacitor value, any resistor Rc or resistor Rd, click Calculate. The result will be displayed.

Equal Component Active Butterworth Low Pass Filter Calculator

Enter the cutoff frequency value, any resistor or capacitor value, any resistor Rc or resistor Rd, click Calculate. The result will be displayed.

Flyback Transformer Power Supply Calculator

The flyback power transformer is a transformer used for DC power supply. It generates high-frequency pulses by periodically cutting off the input power supply, and then converts the required voltage t

Frequency and Wavelength Calculator

Frequency is a measure of the number of occurrences of a repeating event per unit time. SI unit of frequency is Hertz (Hz), named after the German physicist Heinrich Hertz. One hertz means one cycle p

Friis Path Loss Calculator

Friis Free Space Formula is the most important antenna theory formula. It relates transmit power, antenna gain, distance, wavelength and received power. The Fries formula is used to calculate the rece

Generator Sizing Calculator

Generators refer to mechanical equipment that converts mechanical energy into electrical energy. It is driven by a water turbine, steam turbine, diesel engine or other power machinery. It converts the

Helical Antenna Calculator

Usage example Input data Wavelength 320 Click "Calculate" to output the results: Frequency 0.938MHz; Electrical impedance 150 ohms; Diameter 1.02e+4 or enter data Frequency 0.32MHz; number

L-C Resonance Calculator

Provides online calculation of LC circuit frequency, which is a good and easy-to-use tool for calculating the frequency of LC oscillation circuit.

Ohm's Law Calculator

Ohm's law means that in the same circuit, the current passing through a certain conductor is directly proportional to the voltage across the conductor and inversely proportional to the resistance of t

Printed Circuit Board Width Tool

QUESTION: Very cool PCB width tool! I would like to know its limits though. I entered a 65 amp current requirement and it returned a track width that must be incorrect. ANSWER: The original graphs th

Pi Attenuator Calculator

*Strictly, a loss quantity when expressed in dB should be positive. However, convention and some literature quote return loss as a negative value akin to an S(1,1) measurement on a Network analyser. *

Power Calculators

Power is a physical quantity that measures the rate of energy conversion or transmission. Power calculation is a very important problem in fields such as physics, power systems, mechanical engineering

Pressure Conversion Calculator

1 bar (bar) = 100 kilopascal (kPa) 1 kilopascal (kPa) = 0.145 pounds force per square inch (psi²) = 0.0102 kilogram force per square centimeter (kgf/cm²) = 0.0098 atmospheric pressure (atm)

Resistor Color Code Calculator

Color bands are used to signify the resistance value with each color signifying a number and these color bands are closer to one end of the resistor than the other. Black 0 Brown 1 Red 2 Ora

Resistance Frequency Capacitance Calculator

Resistance is the physical quantity that blocks the flow of current in a circuit, usually expressed in ohms (Ω). Frequency refers to the number of periodic events that occur per unit time, usual

Sallen-Key Active Butterworth High Pass Filter Calculator

The Sallen-Key type filter was introduced by R.P. Sallen and E. L. Key of MIT Lincoln Laboratory in 1955. The circuit produces a 2-pole highpass response using two resistors, two capacitors and a un

Sallen-Key Active Butterworth Low Pass Filter Calculator

The Sallen-Key type filter was introduced by R.P. Sallen and E. L. Key of MIT Lincoln Laboratory in 1955. The circuit produces a 2-pole lowpass response using two resistors, two capacitors and a uni

Standard Resistor Closest Value

Online Standard Resistor Closest Value Calculator. Standard Resistor Closest Value Calculator is to find the nearest value of a resistor. Enter the resistance value, and then press calculate. The resu

Tee Attenuator Calculator

The Tee attenuator (T-pad) is a specific type of attenuator circuit which resembles the shape of the letter "T". The Tee attenuator consists of one series resistor at the input and two parallel, one o

Voltage Drop Calculator

Voltage drop calculator is used to estimate the voltage drop of a circuit. Calculations are based on resistance and reactance data from the Electrical Code (NEC). The Estimated Resistance tab performs

Wheatstone Bridge Calculator

A Wheatstone bridge is a measuring instrument invented by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone in 1843. The Wheatstone bridge is an electrical bridge c

Transmission Line Calculator

Instructions: Enter the frequency, center-to-center spacing, and wire diameter. If you want to specify a conductor other than copper, choose "custom" and specify the conductivity of the conductor mate